Award-winning photographer Pete McBride takes us on a gripping adventure story through stunning, never-before-seen photography, along with powerful essays from best-selling authors Kevin Fedarko and Hampton Sides. Through his “walk in the park” hiking the entire 750 miles of Grand Canyon National Park — from the Colorado River to the canyon rim — McBride captures the majesty of this natural wonder as he calls on us all to protect America’s open-air cathedral.